https://www.thethingsnetwork.org/labs/story/build-the-cheapest-possible-node-yourself

https://www.thethingsnetwork.org/community/berlin/post/how-to-build-a-simple-and-very-cheap-lorawan-node-with-arduino

https://www.thethingsnetwork.org/forum/t/cheap-and-simple-lora-node-for-schoolproject/22364/5

https://forum.iot-usergroup.de/t/nucleonbasenode328-arduino-328-pro-mini-lora-gehaeuse-antenne/287

Wahrscheinlich dieses hier:
---------------------------
https://forum.iot-usergroup.de/t/wijnand-s-iot-battery-sensor-board-weiterentwicklung/339/2

http://alf4all.demon.nl/engineering/topics/digital_system_design/targets/Arduino-Pro-Mini_RFM95/index.htm